引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1704次   下载 1744 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Optical Properties of Oligo(fluorene-vinylene) Functionalized Anthracene Linear Oligomers: Effect of π-extension
Tian-hao Huang,Li-li Qu,Zhi-hui Kang,Ying-hui Wang*,Ran Lu,Er-long Miao*,Fei Wang,Gao-wen Wang,Han-zhuang Zhang*
Author NameAffiliationE-mail
Tian-hao Huang College of Physics, Jilin University, Changchun 130012, China  
Li-li Qu College of Physics, Jilin University, Changchun 130012, China  
Zhi-hui Kang College of Physics, Jilin University, Changchun 130012, China  
Ying-hui Wang* College of Physics, Jilin University, Changchun 130012, China yinghui_wang@jlu.edu.cn 
Ran Lu College of Chemistry, Jilin University, Changchun 130012, China  
Er-long Miao* State Key Lab of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China miaoxx@gmail.com 
Fei Wang State Key Lab of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China  
Gao-wen Wang State Key Lab of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China  
Han-zhuang Zhang* College of Physics, Jilin University, Changchun 130012, China zhanghz@jlu.edu.cn 
Abstract:
The photo-physical properties of oligo(fluorene-vinylene) functionalized anthracene linear oligomers (An-OFVn (n=1-4)) have been systemically investigated through experimental and theoretical methods. The steady-state spectral measurement shows that the increas-ing of fluorene-vinylene (FV) group could lead to the red shift of absorption spectra and restrain the excimer formation between oligomers. Quantum chemical calculations exhibit that the energy levels of HOMO, LUMO, and the band gap gradually converge to a con-stant in accompany with the increasing of FV unit. Meanwhile, the electronic cloud which distributes on the branch arms, also gradually enhances and makes the absorption spectral shape of oligomers become similar to that of branch arms step by step. The time-resolved fluorescence tests exhibits that the lifetime of excimer emission would be almost invariable after the number of FV group in oligomer is ≥2. In nonlinear optical test, the two-photon photoluminescence efficiency and two-photon absorption cross-section will both gradually enhance and be close to an extremum after the number of FV unit is equal to 4. These results will provide a guideline for the design of novel photo-electronic materials.
Key words:  Linear conjugated oligomer, Two-photon absorption, Fluorene-vinylene group
FundProject:
以低聚(芴-亚乙烯基)为官能团的蒽基线型低聚物光学性质的实验和理论研究:π延展的作
黄田浩,曲丽丽,康智慧,王英惠*,卢然,苗二龙*,王飞,王高文,张汉壮*
摘要:
通过实验和理论方法系统地研究了以低聚(芴-亚乙烯基)为官能团的蒽基线型低聚物(An-OFVn (n=1~4)) 的光物理性质. 稳态光谱测量表明:芴-亚乙烯基单元的增加会导致吸收光谱的红移,并抑制低聚物间激基缔合物的形成. 量化计算表明:随着芴-亚乙烯基单元的增加,HOMO,LUMO能级及带隙逐渐趋于常量. 支臂上的电子云分布也逐渐增强,使得低聚物吸收光谱的形状逐步趋向于支臂本身吸收光谱的形状. 时间分辨荧光测试表明,当低聚物中芴-亚乙烯基单元的数目≥2后,激基缔合物的辐射寿命几乎是不变的. 在非线性光学测试中,双光子荧光产率和双光子吸收截面都会随着芴-亚乙烯基单元的增加逐渐增强,并于芴-亚乙烯基单元的数目为4时接近一个极值.
关键词:  蒽基线型低聚物,双光子吸收,芴-亚乙烯基
DOI:10.1063/1674-0068/26/01/61-66
分类号: